www.imoc.co.uk

Sorry I didn't get a PM from you about that, maybe a forum glitch?

I was injecting around 1.5L through the inlet and had a lot of success, ignition advanced, no intercooler, bigger turbo, lower than stock inlet temps, no need for direct port IMO.

Been out in a propane injected diesel before that ran nitrous also, was good.

For a SW20 running circa 300bhp 250cc per min is a max amount of H20, you should aim for 200cc IMO, running 800cc of meth is a must, as far away from the valve as is possible.

Surely these can be manufactured over here at a much cheaper cost? Potentially, the two ends are 'off the shelf' items (Mk1 front steering end and the rose joint). However the centre bar may be custom fabricated and possibly the spacers too. :-k You'd have to sit down and crunch the numbers, but I ...

Maybe... Rather than thinking about the air temps rising then being cooled by the water, what if because you are injecting water pre turbo the water is being put under pressure at the same time as the air so to speak. Maybe this would stop the temps rising so high in the first place :-k Maybe. I kn...

I wanted fastest spool, to test the theory I removed the eBay SMIC and went hard.

If it was replaced the efficiency of the intercooler would be decreased with the pre intercooler injection points maybe.




Also high pressure increases the boiling point of water, this makes evaporation less likely.

I would assume so, all I know is that there seems to be many papers that document the cooling effect, even wiki (which is not peer reviewed) documents it.

I cant find any tests to support otherwise though, can anyone else?

Every paper or site I look at says otherwise, intercooling effects of water injection seem very well documented.

I dont drive to/around the nurburgring, it was a fast road car.

I have a whole bunch of pics and data logs on the thread I linked earlier.
http://www.imoc.co.uk/forums/viewtopic. ... &start=140

Any info you could add on what the RAF did would be mega interesting.

I deemed that I didn't need it, methanol seemed to reduce the intake temps so well I could run without it, seems like I was right or the engine would have gone bang, it ran for years like that.

The issue I am trying to deal with here is Bobs comment that there is no cooling of the inlet air via water injection. The air is heated inside the turbo is it not? If we cool it there we are doing as good a job as anywhere else, even better in some respects as it has other advantages, the RAF chose...

Turbos sometimes get a little bit hot, they also pull quite a vacuum which allows the water to boil at a much lower temperature and then we have explosive evaporation at the tips of the blades.. The simple evidence for this is that pre compressor water injection has proved many times to result in mo...

Bob we seem to be talking about multiple scenarios on this thread but for the purposes of WI discussion do you not agree that if the water is injected before the turbo which obviously results in total evaporation of the liquid does this not reduce the inlet air temp?

No Natural gas is 95 per cent Methane (CH4) Plus four other hydrocarbons: Ethane (C2H6) - 2.5%, Propane (C3H8) - 0.2%, Butane (C4H10) - 0.06%, Pentanes Plus (C5H12 + C10H22) - 0.02% It also contains small amounts of: Nitrogen (N2) - 1.6%, Carbon Dioxide (CO2) - 0.7%, Hydrogen Sulphide (H2S) - trace...

So "inlet air" is natural gas?

What do you guys make of this paper? http://turbolab.tamu.edu/proc/turboproc/T34/t34-06.pdf Dazz your last post was empty? I'm gonna have to read that at least 3 times. There appears to be a couple of places where it seems to be well documented that inlet air temp was reduced by evaporate cooling o...

So you're adding the water before the turbo. But the Water only cools when changing from a liquid to a gas. If there's no water vapour left after the turbo, how is it cooling the compressed air after the turbo. You also say your injecting at 2l per min. When you go for a drive for half an hour, how...

What do you guys make of this paper?


http://turbolab.tamu.edu/proc/turboproc/T34/t34-06.pdf


Dazz your last post was empty?

Hi buddy, the MR2 was sold in parts a while back, girlfriend wanted something newer and after 10 years of owning the car I couldn't really refuse ;(

I don't have a current project car, been busy moving house and stuff.

What sort of pressure and temperature is the water and methanol before its injected. To drop air temps over the range I'm guessing that fast it would require a lot of energy? I'm very interested in the theory. I don't disagree with the benefits of WI but would like to know the math behind it. In my...

So how can you be sure your reading o f the inlet temps is correct? Do you see my opinion with regards to the moisture collecting on the probe. I'm no expert when it comes to car engines and injection systems but I am an expert in testing and measurements. I don't have any evidence that it is 100% ...